I vaguely recall adding some small caps for stability to work in all conditions, but indeed a nice topology that eliminates the service calls when outputs are one legged, and level drops with simple differential outputs. While that topology does preserve level you still lose headroom when one leg is shorted.

I vaguely recall adding some small caps for stability to work in all conditions

Walt Jung provides the only cross-coupled floating output schematic I've seen published with added stability caps.
The THAT1646 is a different topology but it also has a HF rolloff (and reduction in Zocm) courtesy of an internal 10 pF capacitor.